This is a note to let you know that I've just added the patch titled
xfrm: Remove inner/outer modes from output path
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xfrm-remove-inner-outer-modes-from-output-path.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f4796398f21b9844017a2dac883b1dd6ad6edd60 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 10 Mar 2023 17:40:32 +0800
Subject: xfrm: Remove inner/outer modes from output path
From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
commit f4796398f21b9844017a2dac883b1dd6ad6edd60 upstream.
The inner/outer modes were added to abstract out common code that
were once duplicated between IPv4 and IPv6. As time went on the
abstractions have been removed and we are now left with empty
shells that only contain duplicate information. These can be
removed one-by-one as the same information is already present
elsewhere in the xfrm_state object.
Just like the input-side, removing this from the output code
makes it possible to use transport-mode SAs underneath an
inter-family tunnel mode SA.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Cc: Sri Sakthi <srisakthi.s@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/xfrm/xfrm_output.c | 33 +++++++++++----------------------
1 file changed, 11 insertions(+), 22 deletions(-)
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -414,7 +414,7 @@ static int xfrm4_prepare_output(struct x
IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE;
skb->protocol = htons(ETH_P_IP);
- switch (x->outer_mode.encap) {
+ switch (x->props.mode) {
case XFRM_MODE_BEET:
return xfrm4_beet_encap_add(x, skb);
case XFRM_MODE_TUNNEL:
@@ -437,7 +437,7 @@ static int xfrm6_prepare_output(struct x
skb->ignore_df = 1;
skb->protocol = htons(ETH_P_IPV6);
- switch (x->outer_mode.encap) {
+ switch (x->props.mode) {
case XFRM_MODE_BEET:
return xfrm6_beet_encap_add(x, skb);
case XFRM_MODE_TUNNEL:
@@ -453,22 +453,22 @@ static int xfrm6_prepare_output(struct x
static int xfrm_outer_mode_output(struct xfrm_state *x, struct sk_buff *skb)
{
- switch (x->outer_mode.encap) {
+ switch (x->props.mode) {
case XFRM_MODE_BEET:
case XFRM_MODE_TUNNEL:
- if (x->outer_mode.family == AF_INET)
+ if (x->props.family == AF_INET)
return xfrm4_prepare_output(x, skb);
- if (x->outer_mode.family == AF_INET6)
+ if (x->props.family == AF_INET6)
return xfrm6_prepare_output(x, skb);
break;
case XFRM_MODE_TRANSPORT:
- if (x->outer_mode.family == AF_INET)
+ if (x->props.family == AF_INET)
return xfrm4_transport_output(x, skb);
- if (x->outer_mode.family == AF_INET6)
+ if (x->props.family == AF_INET6)
return xfrm6_transport_output(x, skb);
break;
case XFRM_MODE_ROUTEOPTIMIZATION:
- if (x->outer_mode.family == AF_INET6)
+ if (x->props.family == AF_INET6)
return xfrm6_ro_output(x, skb);
WARN_ON_ONCE(1);
break;
@@ -866,21 +866,10 @@ static int xfrm6_extract_output(struct x
static int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb)
{
- const struct xfrm_mode *inner_mode;
-
- if (x->sel.family == AF_UNSPEC)
- inner_mode = xfrm_ip2inner_mode(x,
- xfrm_af2proto(skb_dst(skb)->ops->family));
- else
- inner_mode = &x->inner_mode;
-
- if (inner_mode == NULL)
- return -EAFNOSUPPORT;
-
- switch (inner_mode->family) {
- case AF_INET:
+ switch (skb->protocol) {
+ case htons(ETH_P_IP):
return xfrm4_extract_output(x, skb);
- case AF_INET6:
+ case htons(ETH_P_IPV6):
return xfrm6_extract_output(x, skb);
}
Patches currently in stable-queue which might be from herbert@xxxxxxxxxxxxxxxxxxx are
queue-6.1/xfrm-remove-inner-outer-modes-from-output-path.patch
queue-6.1/xfrm-remove-inner-outer-modes-from-input-path.patch
